Generalized scaling of spin qubit coherence in over 12,000 host materials

Shun Kanai, F. Joseph Heremans, Hosung Seo, Gary Wolfowicz, Christopher P. Anderson, Sean E. Sullivan, Mykyta Onizhuk, Giulia Galli, David D. Awschalom, Hideo Ohno

Research output: Contribution to journalArticlepeer-review

15 Citations (Scopus)


Spin defect centers with long quantum coherence times (T2) are key solid-state platforms for a variety of quantum applications. Cluster correlation expansion (CCE) techniques have emerged as a powerful tool to simulate the T2 of defect electron spins in these solid-state systems with good accuracy. Here, based on CCE, we uncover an algebraic expression for T2 generalized for host compounds with dilute nuclear spin baths under a magnetic field that enables a quantitative and comprehensive materials exploration with a near instantaneous estimate of the coherence time. We investigated more than 12,000 host compounds at natural isotopic abundance and found that silicon carbide (SiC), a prominent widegap semiconductor for quantum applications, possesses the longest coherence times among widegap nonchalcogenides. In addition, more than 700 chalcogenides are shown to possess a longer T2 than SiC. We suggest potential host compounds with promisingly long T2 up to 47 ms and pave the way to explore unprecedented functional materials for quantum applications.

Original languageEnglish
Article numbere2121808119
JournalProceedings of the National Academy of Sciences of the United States of America
Issue number15
Publication statusPublished - 2022 Apr 12


  • cluster correlation expansion
  • electron spin coherence
  • quantum information
  • scaling laws
  • spin qubits

ASJC Scopus subject areas

  • General


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